diff --git a/astrbot/cli/commands/cmd_run.py b/astrbot/cli/commands/cmd_run.py
index 6039d2eff..68b71dca9 100644
--- a/astrbot/cli/commands/cmd_run.py
+++ b/astrbot/cli/commands/cmd_run.py
@@ -52,8 +52,10 @@ def run(reload: bool, host: str, port: str, backend_only: bool) -> None:
         os.environ["ASTRBOT_ROOT"] = str(astrbot_root)
         sys.path.insert(0, str(astrbot_root))
 
-        os.environ["DASHBOARD_PORT"] = port or "6185"
-        os.environ["DASHBOARD_HOST"] = host or "::"
+        if port is not None:
+            os.environ["DASHBOARD_PORT"] = port
+        if host is not None:
+            os.environ["DASHBOARD_HOST"] = host
         os.environ["DASHBOARD_ENABLE"] = str(not backend_only)
 
         if reload:
diff --git a/astrbot/core/utils/io.py b/astrbot/core/utils/io.py
index 9b0efb6b2..04adca634 100644
--- a/astrbot/core/utils/io.py
+++ b/astrbot/core/utils/io.py
@@ -254,8 +254,10 @@ async def get_public_ip_address() -> list[IPv4Address | IPv6Address]:
                     ip = ip_address(raw_ip)
                     if ip.version not in found_ips:
                         found_ips[ip.version] = ip
-        except Exception:
-            pass
+        except Exception as e:
+            # Ignore errors from individual services so that a single failing
+            # endpoint does not prevent discovering the public IP from others.
+            logger.debug("Failed to fetch public IP from %s: %s", url, e)
 
     async with aiohttp.ClientSession() as session:
         tasks = [fetch(session, url) for url in urls]
diff --git a/astrbot/dashboard/routes/route.py b/astrbot/dashboard/routes/route.py
index 530a0807c..8a22e1fa5 100644
--- a/astrbot/dashboard/routes/route.py
+++ b/astrbot/dashboard/routes/route.py
@@ -59,4 +59,5 @@ class Response:
         return self
 
     def to_json(self):
-        return jsonify(asdict(self))
+        # Return a plain dict so callers can safely wrap with jsonify()
+        return asdict(self)
diff --git a/astrbot/dashboard/server.py b/astrbot/dashboard/server.py
index db747b61e..71ae398fb 100644
--- a/astrbot/dashboard/server.py
+++ b/astrbot/dashboard/server.py
@@ -1,5 +1,4 @@
 import asyncio
-import ipaddress
 import logging
 import os
 import platform
@@ -33,6 +32,11 @@ from .routes.session_management import SessionManagementRoute
 from .routes.subagent import SubAgentRoute
 from .routes.t2i import T2iRoute
 
+
+class _AddrWithPort(Protocol):
+    port: int
+
+
 APP: Quart